JPS59145A - Electrophotographic copying device - Google Patents

Abstract

PURPOSE:To perform double copying of an excellent operability with a copying device having original placing plate of two faces, by installing a copying size setting means which specifies an extent to be scanned on one side of an original and scanning the original at the other side with a scanning length specified by the setting means. CONSTITUTION:An exposure device 13 is used for exposing images of originals on the 1st surface B and the 2nd surface C, which are separated from each other by a reference line A at the center of a transparent original placing table 20, upon a photoreceptor 11, and successively exposes images of the original on the original placing table 20 within the extent from the reference line D to a set line E set by a copying size setting piece 22, at a prescribed width while moving a lamp 21 and scanning system. That is to say, the length from the reference line D to the set line E by the copying size setting piece 22 is adjusted in accordance with the copying size setting piece 22 is adjusted in accordance with the original size and in the case of single copying, the originals on the 1st surface B and the 2nd surface C of the original placing table 20 can be copied alternately.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrophotographic copying apparatus that does not have two document placement surfaces.

Conventionally, electrophotographic copying devices have been used to copy σ) on one side of the copy paper (φ), and a method that automatically copies σ) on both sides of the copy paper has also been proposed; has not yet been put into practical use due to various technical problems. In an electronic photocopying device that uses automatic Vc raft copying on both sides of transfer paper, it is desirable to copy the same size on both sides of the transfer paper, and this is especially true when opening a book and copying both sides of the paper. When doing so, it is +1 history, and it is also desirable to be able to copy only on one side of the transfer paper.

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a photographic copying apparatus that has two original mounting surfaces and is extremely effective and convenient for double-sided copying. .

The present invention will be explained in detail below with reference to the drawings. As shown in Figures 3'1 to 4, there is a charging device 12. Exposure setup 13
．． The developing device 14, the transfer device 15, the separating device 16, the transfer device 17, the separation device J8, and the cleaning device 19 are arranged in sequence along the rotation direction. The exposure device 13
As shown in Figure 2, the transparent document table 20 is
7) Base IvL+%! The boundary between A and B and C
The object to be copied, that is, the original σ) placed on one side of the photoconductor H, is placed on the photoconductor H with a slit. While moving the scanning system to be Standard #DJ-Takumi is switch SW 9.
5WIJ and another device, switch 5WIU, 5W
12? J'' - Disposed integrally with the image setting piece 22 that is to be copied on the setting line E. Document table 20 - Normally located at the normal position shown in the figure where the reference lines A and D coincide, and the switch SW 9.5Wl (
+ In order to operate σ) the operating punch 23 is located at
C or l is fixed in one piece. Switch 5WII,
12) An actuating piece 24 for printing the image is located on the reference line of the lamp 21, etc.
The transfer roller 25 is constructed using five transfer rollers 25tXy' and is driven to rotate in the opposite direction at the same circumferential speed as the photoreceptor 11.

The transfer roller 25 is pivotally connected to one end of a lever 26, the lever 26 is pivotally supported at the center, and the other end is connected to the moving shaft through a spring 27. At the same time, a return spring 28 is inserted between the fixed part frame and the fixed part frame. When the renoid 5OL2 is not composing 1, the transfer roller 25 is rotated by the return spring 28 until the lever 26 hits the stopper 29.
.

[Nagisa separated from the light body], / When Lenoid 5OL2 is activated, lever 26 is activated by Lenoid SQL 2.
8 and is brought into contact with the photoreceptor 11. Similarly to the transfer device It5, the transfer device 617 is also configured by using a transfer device 14o-ra 3o once a month, and the Lunoid 5OLI is fabricated +1. The transfer roller 30 is in pressure contact with the photoreceptor 11 when
It's turning. Also, instead of the transfer roller, a multi-layer device may be used to perform two transfers once a month. A transfer paper 32 is fed between the transfer roller 25 and the photoreceptor 11 from a paper feeder 31, and this paper feeder 31 includes a pair of rollers 33 and 34. This roller 33 rotates at a predetermined speed and pivots once.The roller 34 is pivoted to one end of a lever 35. The lever 35 is pivoted at the center, and the other end of the lever 1 is coupled to the movable shaft of the 1' λ 36 through the lever 5QL4, and between it and the immovable part there is an additional part 37. Fang 1. Created by Elora 34ke Runo 1do 5QL4 Ir
l+ l-Matai t-work and totoni (Pumi J・:i'4) J
i4 The lever 35 hits the stopper 38 by the spring 37 (it rotates to the r'L position and moves forward from the roller 33, and when the lunoid 5OL4 moves in the direction f) (SOI, 4)
As a result, the lever 35 rotates against the spring 37 and comes into contact with the roller 33.The transfer paper 32 is fed one by one from the paper feed tray between the rollers 33 and 34φ. When pressed against the roller 33, the rollers 33, 34
Due to this, there is a feed force between the transfer roller 11 and the transfer roller 25.
do. Separation method '160 A separation claw is used to remove the juice 1, and the paper separated from the wood grain is guided by guide plates 39 and 40 and sent to an endless belt 42 by a guide plate 41. Sleep. Endless belt 42 rollers 4
3.44, clutch CL '2, CLBσ
) operation causes IF forward/reverse rotation)・1. It has become so. A 01 fixing machine 45 is arranged on the endless belt 42, and the fixing device 45 fixes the transfer paper conveyed by the endless belt 42. There is a switch y6 on the path where the transferred paper is fixed by the web-axe attaching device 45 and conveyed by the forward rotation of the endless belt 42, and the roller 4
4σ] A pair of rollers 57.5 that are constantly rotating on the outside
8, and SW 7 is arranged outside of it, and these switches Y6 and SW 7 are activated in the case of single-sided copying (σ), and only the switch SW 6 is activated in the case of double-sided copying. Endless Bell) 421! l. When reversed, the transfer paper is generally guided to the endless belt 46 by the guide piece 4I. endless belt 4
6 is passed over rollers 47 and 48 and clutch CL3
During printing, the transfer paper is reversed and guided by the guide piece 41, and is conveyed between the "C" roller 11 and the rolling roller 30. A switch SW 5 is disposed on the path through which the paper is conveyed, and this switch SW 5 is activated by the transfer paper.The separation device 18 uses a separation claw, and the transfer paper separated by the separation claw is It is guided by guide plates 49 and 50 and conveyed to the paper ejection port by an endless belt 5.Endless belt 5I
i: I is applied to the rollers 52 and 53, and the fixing device 54 is placed above it. This -1! A switch sw8 is connected between the mounting cage 54 and the paper ejection [1] at t'! ii', set this switch SW8 to make paper jam 1. Further, the cam 5ji is connected to the prestige body 11 via the clutch CLr and the southeast mechanism 56, and switches swj to SW4 are arranged around the cam 550.

Now, if terminal BJ is connected to the 82 AC 11f power source and the main switch MS is closed, the output of the AC power source will be applied between terminals B3 and 84 via fuse F, and the fixing device 45, 54 and motor Ml is supplied with power and enters the ℃ composition 1 state, and the imager 14 and the cleaning device Hr 9 are turned on to the 2# state by the motor Ml, and the photoreceptor 11 is rotated μ (behavior) 7, and the timer is turned on. 'r
l is the power supply, and the power is turned on.

If you close the print switch ssw in this state,
Relay RA2 is activated. σ"m l;i-' contact, Ii
! 5RA2- Close al to maintain self-preservation and maintain normal υ
F4 contacts RA2-a2 and RA2-a3%' are closed and normally closed contact RA2-bl = RA2-b3 is opened. Relay RAt &J: Normally open ffi, RA2-a
2, the normally open contact 'RAI-al
When closed 1 and ℃ self 1 present, the trap normally open contact RAI
-+2 ~ RA I-Bite 5 is closed. By the closing of this normal i (1 dark point RAI-2, relay RA4<) is activated and its normally open connection, 0R,A4-al%-opens and closes, and self-maintains, and normally 14; 1 contact,' HRA4-a
2. Close RA4-a3. This normally open connection, from the closed state of RA4-93,
When L3 is activated, the transfer roller 25 comes into contact with the photoreceptor 11, and the separating claw 16 comes into contact with the load, the ten bodies 11.

In addition, when normally 14i1 suction point RAI -a4 is closed, clutch CL2 is actuated to rotate the endless belt 42 in the forward direction, and when normally open contact 2 (j normally open contact TIA+-υ5C1) is opened, power supply 01 or iJ1 is supplied. 1(f, electric body t1
1 band W (Sizero. Clutch CLI is normally open contact RAI -
t2 cam 55 or rotation 11 from the closing point of l113
Drive f. Switch SWI cam 55 U1 steady position f
When the pair is rotated, it closes. 7), switch SW2
When closed by cam 55, relay RA 6
Make one and then connect the normally open contact R, A6 - 1!1
°11 Open the self-holding contact R, A6-
a2, close RA6-53 and normally open contact RA6-t
) is released one by one. This normal FHM contact RA6-a2
Close 5!2. The lamp 21 flashes, and the normally open contact RA6-a3 σ) is closed, causing the motor M3 to rotate forward, the wrap 2I and the honor system to move in the direction of the arrow in the figure, and the first side BF of the document table 20 to be opened. q) When the image is dimmed on the photoreceptor 11, a static latent image is formed.

This static electricity/! +! The f image is developed with toner by the moon/r imager 14. When the lamp 2J and the optical system start, the actuating piece 24 starts in the same direction and the switch 5W11 closes. and ゛＞'(-Academic transfer ii# and copy size setting piece 22 set line E soil and original σ) hoe h',, ) V-, then switch 5w1z by 7 pieces of koji making 24 c) It works.

Relay R, A6?ノ;It returns. Therefore, as soon as lap 2I disappears, motor M3 is reversed and lug 21
And the optical system is back; Ku4Sochi5Wi2ge1%I! l
ti'+'1-ro. If one side is uniformly thick (v), the original platen 2 ()σ
) Alternately copy the manuscripts of scolding J side B and consideration / 2 and C 10, 14-1
- When the switch 5W13 is closed, 1. Ru. Therefore, when switch 1 switch SW 131 is closed, switch 5
When WI2 is activated, relay RA7 is activated, and its normally open contact RΔ7-al becomes ``11'' and becomes self-continuous. This normally open contact RA7-a2
When the motor M4 closes, the original platen 20? ) ζ It is moved in the direction of the arrow shown. When the original platen 20 moves to Ql-, the actuating piece 23 moves to Jl lI$ and the switch 9 closes. When the document table 20 moves and its reference line A reaches the setting line E defined by the copying adjustment plate 22F, the switch 5WJO is actuated by the actuator 23, and the motor M4 is stopped, and the document table 20 is stopped. . lamp 24 and yt science system u-
When the position σ) reaches the constant position V1°, the actuating piece 24 turns the switch 5w1t to 11, stopping the motor M3 and stopping the lamp z1g and the optical system -v. 7r-tr) Closed by rear switch SW3 and cam 55'! 11, renoid so t, 4? J: Operating and temperature change 9
1 (32) is sent between the transfer roller 25 and the photoreceptor 11, and the toner is transferred from the photoreceptor J1 to the transfer paper 32.

The transfer paper is separated from the body Jl by the separation claw 16, guided by the guide plates 39 and 40, and transferred by the guide plate 4 (belt 42 (C) and conveyed by the endless belt 42 during its conveyance. The toner is fixed by the gN 45. This paper is fixed by the fixing device 45.
'When switch SW61 is activated later, relay RA
J is restored and the charging device 12 is activated.Ill, not l'x,
At the same time, relay RA3 is made Uυ1 and its normally open contact R
A3-ra1 are self-contained with closure 12 and are normally open, d R, A3--. 2 is closed to supply power to timer T, normally open contacts RA3-bl, RA3-t+2
to open. Due to the opening of the normally closed contact RA3-b2, the lunoids 5OL2 and 5OL3 are turned 6j and I=
The rr-+-ra 25 and separation claw 16 are separated from the photoreceptor J1. 1 irises at 45' in Dingning fi;, 'descendants'
The phase code is further sent and extracted to the same paper base, but in the middle of the process, switch SW7 is set to I and relay R is set.
A 2.17 A4 force 1 no longer works tie-7-'l'
Or stop the power supply 1 and the heavy chain system will be released. Shitakatsu °C conversion h"
The paper was published on a huge scale, and
σ) The copy size can be changed by moving the first copy size setting piece 22. switch 5w1
If 3 is closed 12 and 1 is 1, timer Tl /
+ζSwitch SW7 is turned off by switch SW7, and switch S'W is closed by the time the set time of 20 seconds has elapsed. The originals on the original platen 2()g)A, 2c, and θ) are sequentially copied in the same manner. The timer Tl is turned on and its normally open,
When a Ti -a returns, relay RA7? J
``--7 motor M4 is reversed and the document table 20 is returned to its original position. Then, the document platen 2 () stops [turns on. Therefore, the switch SW] 3 does not close, and if it is, the document platen 2 () stops and the document platen 2 () stops [turning on]. The manuscripts will be alternately duplicated on one side. When the switch 5WI3 does not close and does not close, the original platen 20σ
4) Only the manuscript of the bottle '11 stone B-H is copied.

In addition, when the main switch MS is closed and the double-sided print switch DSW is closed, the relay RΔl is activated, and its normally open contact, 5RA1-U1, is closed, thereby self-holding and normally open contact RA2-a2. ~RA2-! 1
1.5 is closed. This opening connection, RAI-A2
Closing activates relay RA4, and its normally open contact RA
4-Al is closed [TV and self-holding, and the normally open contacts RA4-A2, RA4-A3%4 are closed. By closing this normally open contact 5QRA4-A3, the renoids 5OL2, 8OL3 are actuated, and the transfer roller 25 comes into contact with the light transfer body, and at the same time, the separation claw 16 moves to the M! −>
It is brought into contact with the y-body 11.

Further, by closing the normally open contact RAI-A4 σ), the clutch CL2 is activated, causing the endless belt 42 to rotate in the normal direction. In addition, by closing the normally open contact RA I - 5 θ), a charging event output is supplied. When the clutch CLI is set to 1, the cam 55 is driven by 1 rotation.Switch SW1 is closed when the cam 55 is rotating from the fixed base position.
When the relay RA6 is closed, the relay RA6 operates to close the normally open connection A RA6- al and maintain itself, and the normally open connection, +, RA6- ! 12, RA6-a:
RA6-1) is closed and the normally open contact RA6-1) is opened.

By closing this normally open contact RA6-A2, lamp 2
1, r is month 1-. , and always 1i1 W point RA6-A
3 17) From closing r, motor M3 changes to IF and ramp 2
J and the honor system move and move to the manuscript table 20 +6 to 1'l and B
Hf) Manuscript σ) (The elephant is the photoconductor VCMl, and the electrostatic latent f elephant is a child.
is imaged with toner from Development Bo @ 14 IC.

When the lamp 21 and the serpentine system start, the actuating piece 24 starts simultaneously and the switch 5W11 turns 121. The lamp 21 and the optical system have been moved and the size is set for the first time.
Adjust the image of the original to the setting line E by piece 22)
Then, the switch record 12 is activated by the actuating piece 24, and the relay RAS or TV is activated. Therefore, Rump “2”
111-7", the motor M3 reverses, the lamp 2x)';bi)1] the thread returns, and the switch 5W12
will return. When the lamp 21 is reached) and the fixed port of the yr1G system is reached, the switch 5WIl is activated by 124.
? J″-opening motor M3 /+ζii・）to 1. When the lamp 2J and I libiko system are stopped. Also, switch 8~
! 12 is made by 1til + piece 241, and relay R and A7 are made! Iul L, Soσ) Normally open contact RA
7-A1 is closed (1+V L) to self-hold and the normally open contact RA7- A2 is closed) Ai and the normally open contact RA7-
Release b by υ11. This constant μ) 1 contact 1tA7-2
σ) Upon closing, the document table 20 is moved in the opposite direction by the motor M4. At the same time as the document table z'o moves, the actuating piece 23 moves It L, switch SW9. is closed. Original N: When the i unit 20 moves and its reference line A comes to the true setting line E of the collar size setting piece 22,
Switch 5iVIO is actuated by actuating piece 23 (F), motor M4 is stopped, and document table 20/+'- is stopped. After that, when SW3 is composed by cam 55,
Runoid 5QL4 is activated and turns/7' (32 turns)
Injected between ShiW n-ra 25 and susceptor 1.1
At $ > r・rest 111) X1 turn'ff7, Cao C, 32
11r-to-2- is transferred to fang 1r. So σ) 177 papers are minutes m
i1 river" 6 (Teyori Mashi) 11 bodies 11 or C) minutes M (Sa 1st
Guided by the guide handles 39, 4U and fed into the endless loop 42 by the guide piece 41), +1. During the conveyance, the toner is fixed by the fixing device 45. t7') When the switch actuates switch SW6, relays R, A, and I return to 1.1, 4ε and 12 return to normal, clutch 2 returns to ○u, and 1II ends. Belt 42 has stopped. In addition, relay RA3 is activated by 1 notch SW6θ) and 2, its port is opened, and 1 RA3-zuJ
11
1 contact, close RA3-a2 and tie? -T
VCm'tM, SAW usual Ijl19. :'Point RA3-
bl, 1. Open tA3-t)2. This normally closed mechanical force RA3-b2) is opened by opening the lunoid 5OL2.
5QL3 returns and the rolling α roller 25 and separating claw 16 are separated from the photoreceptor 11. The cam 55 passes through the switch SW4 and rotates. When the set time elapses after the timer T is supplied, it is activated and its normally open state is opened.
- Close a5 and use normal closing to create Lunoid 80 L +
? 1. The transfer roller 30 is brought into contact with the photoreceptor 11, and the clutch CLI is activated by closing the normally open contact 'r-a3.'Then, the cam 55 continues. Clutch CL3 is activated by the rotation, and the endless belt 42.46
The endless belt 4z is reversely conveyed, and the normally open contact T-a5 is closed, so that the banding device 12 is actuated and the photoreceptor 11 is moved into the band. switch SW
6 is when the transfer paper passes (Y return, 5 switches SW)
When actuated by the transfer paper, the clutch CL3 is activated and the endless bells 1-42 and 46 are stopped. Also Su 1
When activated by Soji SW2 or cam 55, relay RA6
When the normally open contact RA6-a is closed and self-maintained, the normally open contact RA6-a is closed and the normally open contact RA6-a is
2, RA6- a3 & Ill completed rich closed contact RA6-
+) Open. This normally open tangent, ψ.

RA6-a2 7p21 lights up due to the opening of σ, and only one is always on! '4i: L contact - RA6 - a3 σ)
Motor M3 by closing? J' = 11 - The rotating lamp and the optical system move in the direction of the arrow shown in the figure, and the 2 document table 20 1.
2nd side C top σ) One image of the original is photoreceptor 1. t K internal light ℃, so σ) fj%? If latent 1 elephant is formed. fjl with 1 retoner in f1/1 elephant contract jat4 in this electrostatic latent @
The image is beautiful. When the lamp 21 and ) 1 minute system starts, the actuating piece 24 starts the same +1 (1i' K and the S1 Sochi history 11 closes. The rung 21 and Choei system move and move to Aki 4 Isaiz W 4 Uka 22. When the manuscript reaches the setting line E, ) Y-L, the switch 5W12 is activated by 24, and the relay RA6 is turned on.

Therefore lamp 21? r's? Portrait No. 1: The motor M3 is reversed, and the lamp 21 is turned on.
Go back, switch 6WJ2 is back, right? lap 21
When the stationary signal is reached, one piece 24 immediately turns switch 5WJI or opens motor M3.
7 stopped, and the lamp 21 and the game 1 school thread 1 (to 1-
Ru. Sog) Rear switch SW3 U1 cam 55VL j%
'1 [Bukiga 1. However, Lunoid 5OL4 is activated;
-J, feed t+, /, c to the rolling paper. Next, when the switch SW4 IJ' and the cam 55 are turned 1 to i1+, L/-R and A5 are actuated, and the open connection 7φjRA5 is activated.
-a1%j If it closes and holds itself, it will flow into the river m 13tj
#Point R, A5- a2 kl,'! to be accomplished. Konkon open small RA5-! 12 σ) By closing, three clutches CL operate, and the shaft end belt 42.46 performs reverse rotation Pi.
Open.

Therefore, the transfer paper is fed between the photoconductor 11 and the rolling q roller 30, and the toner is transferred from the photoconductor 11 onto the transfer paper. As a result, the transfer paper is to be copied on both sides, is separated from the photoreceptor 11 by the first and eleventh claws 18, and is then conveyed by the endless belt 51" by the guide plate 49.50. 1, σ) The image is fixed by the fixing base 54 during transportation. The transferred 4th generation is discharged to the paper discharge tray, but when doing so, the 8Vh3 must be set to 1 immediately. This switch 5tv8'
F)+Wi1 relay relay RA3, RA4,
Qui-7-'I', Relay IyaA! i, RA7 or return lens 80LI or fνIliζI- to transfer 110-ra 30 or pancreatic light body 11 to surrounding IJ1 clutch CI, 3
The endless belts 42 and 46 stop after returning to C.

Then, the motor IVi4 reverses and the ℃I'PA platen 2
0 Hanging stand 20 (Dori, original 1j stand 20/J, switch S from Hiki's work Q + piece 23e? which returned to the original steady position
W9 opens and motor M4 stops [-Original platen 20
stops. Ejected onto the document tray (11 Zawata transfer paper is placed on the document tray 2)
06τ on the 11th spear: J 1ji1C+
The image of bLm is photographed on screen K 44F, so'7) p'l
il 'j-drunkVL-,F'no'r's's is a force' C is equal to hardy'to 1zF+',': %,'
Due to Ha22, it was decided that it would be Nendo.

According to the above q), according to the present invention (according to '7? j9 children, 5 children, 2 pages according to the copying machine 4) manuscript paper surface σ) t', I+i
I can't repeat it separately, so I'm transcribing it.
, (r) Can be copied on both m1 (Vt book) Of course, transfer paper σ) σ) 1pq can be made on one side. Also, three-dimensional objects > 21 fii f;j of course ice and snow σ) left and right R
Also exchange. Goto〆 ``Kuhara f Seki placement surface G) 1 + ta!ll: 10:・〃Q to take.

[Brief explanation of the drawing]

Figure 3'1 shows Example 1 on a real-life photographic device q)-actual folding according to the present invention 4M 111&l, "4-21";
, 1rfJ ′JL ai i + 11K +, ;Kerukaku)shi = = old σ) - 偉11?1・Show structure +r12. L! S1, )・31 So1 and you・41 Nel are 1, put into the δ14 example, and are a circuit diagram showing the rust system. 11... End 1) Y° body, J2...・Obi Sosouji, 13・
・・Kikoso bamboo, 14・・Genkasu noh, 15・・Transfer attachment, 16・・Separation device, 17・・Transfer device, 18・・
・Division value, 2 (1,... manuscript table, 21... lamp,
22... Continuous shooting size setting, 23.24... Operating table, SW9-5W12 switch, 31... Thread 2 T slope (
Device゛, 45゜54... Fixing device. Procedural amendment is a formality) Director of the Patent Office Mr. Wainu, Director of the Patent Office Display of the case Patent Application No. 43679 of 1988 2 Name of the invention Electrophotographic copying device 3 Person making the amendment Relationship to the case Patent applicant name Name (674) Ricoh Co., Ltd. 4 Agent Address: 4-5-4-6 Kyodo, Ritsutaya-ku, Tokyo Target of amendment 257-

Claims (1)

[Claims] Ichiko photo duplexing device b which performs screen duplexing [There are two document loading tables capable of duplicating the original manuscript, and the said loading table 10, which is adjustable according to the manuscript size VC. An electrophotographic copying machine comprising a copy size setting means for specifying a range to be scanned on one side, and scanning an original on the other side with a scanning length specified by the setting means.